首页 | 本学科首页   官方微博 | 高级检索  
     

中频数字正交解调接收机的研究及实现
引用本文:王学娟,秦宁宁,山秀明,徐保国.中频数字正交解调接收机的研究及实现[J].微计算机信息,2011(2):53-55.
作者姓名:王学娟  秦宁宁  山秀明  徐保国
作者单位:江南大学通信与控制工程学院;清华大学电子工程系
摘    要:数字接收机在现代雷达、电子战、通信等领域的应用越来越广泛,数字接收机的性能是由正交解调信号的幅相一致性决定的。这里描述了数字正交解调的核心部分—数字滤波器的设计,通过运用均方误差最小化准则设计法和切比雪夫等波纹逼近设计法设计FIR数字滤波器,并利用MATLAB平台进行仿真,比较分析表明了用均方误差最小化准则设计法设计具有严格线性相位特性的FIR数字滤波器的最优性,即:可以获得较好的幅度误差和相位误差,从而保证了数字接收机的性能。

关 键 词:数字接收机  数字正交解调  均方误差最小化准则设计法  FIR滤波器

Research and implementation of IF digital quadrature demodulation receiver
School of Internet of Things Engineering, Jiangnan University, Wuxi,China WANG Xue-juan QIN Ning-ning XU Bao-guo.Research and implementation of IF digital quadrature demodulation receiver[J].Control & Automation,2011(2):53-55.
Authors:School of Internet of Things Engineering  Jiangnan University  Wuxi  China WANG Xue-juan QIN Ning-ning XU Bao-guo
Affiliation:(School of Internet of Things Engineering, Jiangnan University, Wuxi 214122, China) WANG Xue-juan QIN Ning-ning XU Bao-guo (Department of Electronic Engineering, Tsinghua University, Beijing 100084, China) SHAN Xiu-ming
Abstract:Application of digital receiver is more and more widely in modern radar, electronic warfare, communications and other fields,digital receiver performance is decided by the signal from the quadrature amplitude and phase demodulation. This paper describes the core part of the digital quadrature demodulation—digital filter design, by comparing the use of MSE minimization design method and chebyshev equality ripple approach method for FIR digital filter design, and use MATLAB simulation platform found, the optimality of the use of MSE minimization design method design a strict linear phase characteristics of FIR digital filter, which can get a better Amplitude error and phase error, and ensure the performance of the digital receiver.
Keywords:Digital receiver  Digital quadrature demodulation  MSE minimization design method  FIR digital filter
本文献已被 CNKI 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号